Alprazolam

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Fatal overdose may occur when benzodiazepines are combined with other depressants such as opiates, barbiturates, gabapentinoids, thienodiazepines, alcohol or other GABAergic substances.[1]

It is strongly discouraged to combine these substances, particularly in common to heavy doses.

Summary sheet: Alprazolam
Alprazolam
Alprazolam.svg
Chemical Nomenclature
Common names Xanax, Alprazolam, Ksalol
Substitutive name Alprazolam
Systematic name 8-Chloro-1-methyl-6-phenyl-4H-[1,2,4]triazolo[4,3-a][1,4]benzodiazepine
Class Membership
Psychoactive class Depressant
Chemical class Benzodiazepine
Routes of Administration

WARNING: Always start with lower doses due to differences between individual body weight, tolerance, metabolism, and personal sensitivity. See responsible use section.

Inhaled
Dosage
Threshold 0.05 mg
Light 0.05 - 0.25 mg
Common 0.25 - 0.5 mg
Strong 0.5 - 1 mg
Heavy 1 mg +
Duration
Total 4 - 5 hours [2]
Onset 5 - 10 seconds
Come up 5 - 10 minutes
Peak 1 - 2 hours
Offset 2 - 3 hours


Oral
Dosage
Threshold 0.10 mg
Light 0.25 - 0.5 mg
Common 0.5 - 1.5 mg
Strong 1.5 - 2 mg
Heavy 2 mg +
Duration
Total 6 - 8 hours [2]
Onset 15 - 30 minutes
Come up 50 - 90 minutes
Peak 1 - 2 hours
Offset 2 - 4 hours
After effects 6 - 24 hours









DISCLAIMER: PW's dosage information is gathered from users and resources for educational purposes only. It is not a recommendation and should be verified with other sources for accuracy.

Interactions
Stimulants
Depressants
Dissociatives


Alprazolam (also known as Xanax) is a depressant substance of the benzodiazepine class. Its characteristic effects include anxiety suppression, sedation, disinhibition, and muscle relaxation.[3]

Like other benzodiazepines, alprazolam binds to specific sites on the GABAA receptor.[4] It is commonly used for the medical treatment of panic disorder, generalized anxiety disorder (GAD), or social anxiety disorder (SAD).[5]

Alprazolam has a fast onset of action and symptomatic relief. 90% of peak effects are achieved within the 1st hour of using in preparation for panic disorder and full peak effects are achieved in 1.5 and 1.6 hours respectively.[6][7] Peak benefits achieved for GAD may take up to a week.[8]

The sudden discontinuation of benzodiazepines can be potentially dangerous or life-threatening for individuals using regularly for extended periods of time, sometimes resulting in seizures or death.[9] It is highly recommended to taper one's dose by gradually lowering the amount taken each day for a prolonged period of time instead of stopping abruptly.[10]

Xanax (Alprazolam) 2 mg tri-score tablets

Chemistry

Alprazolam is a drug of the benzodiazepine class. Benzodiazepine drugs contain a benzene ring fused to a diazepine ring, which is a seven membered ring with the two nitrogen constituents located at R1 and R4. The benzyl ring of alprazolam is substituted at R8 with a chlorine group. Further, the diazepine ring is bonded at R5 to a phenyl ring. Alprazolam also contains a 1-methylated triazole ring fused to and incorporating R1 and R2 of its diazepine ring. Alprazolam belongs to a class of benzodiazepines containing this fused triazole ring, called triazolobenzodiazepines, distinguished by the suffix "-zolam".

Alprazolam is substituted with a phenyl group at position 6, with a chlorine atom at position 8 and with a methyl group at position 1. It is an analogue of triazolam, the difference between them being the absence of a chlorine atom in the 'ortho' position of the phenyl ring. It is soluble in alcohol and insoluble in water.

Pharmacology

Benzodiazepines produce a variety of effects by binding to the benzodiazepine receptor site and magnifying the efficiency and effects of the neurotransmitter gamma aminobutyric acid (GABA) by acting on its receptors.[11] Alprazolam is a positive allosteric modulator of the gamma-aminobutyric acid (GABA) type A receptor. As this site is the most prolific inhibitory receptor set within the brain, its modulation results in the sedating (or calming effects) of alprazolam on the nervous system. The anticonvulsant properties of benzodiazepines may be, in part or entirely, due to binding to voltage-dependent sodium channels rather than benzodiazepine receptors.[12]

Alprazolam causes a marked suppression of the hypothalamic-pituitary-adrenal axis. Administration of alprazolam has been demonstrated to elicit an increase in striatal dopamine concentrations.[13] This results in effects including reduced anxiety, muscle relaxant, antidepressant and anticonvulsant activity. The GABA chemical and receptor system mediates inhibitory or calming effects of alprazolam on the nervous system. Binding of alprazolam to the GABAA receptor, a chloride ion channel, enhances the effects of GABA, a neurotransmitter. When GABA binds the GABAA receptor the channel opens and chloride enters the cell which makes it more resistant to depolarization. Therefore, alprazolam has a depressant effect on synaptic transmission to reduce anxiety.[14]

The GABAA receptor is made up of 5 subunits out of a possible 19, and GABAA receptors made up of different combinations of subunits have different properties, different locations within the brain, and, importantly, different activities with regard to benzodiazepines. Alprazolam and other triazolobenzodiazepines such as triazolam that have a triazole ring fused to their diazepine ring appear to have antidepressant properties.[15] This is perhaps due to the similarities shared with tricyclic antidepressants, as they have two benzene rings fused to a diazepine ring. The therapeutic properties of alprazolam are similar to other benzodiazepines and include anxiolytic, anticonvulsant, muscle relaxant, hypnotic and amnesic; however, it is used mainly as an anxiolytic.

Giving alprazolam, as compared to lorazepam, has been demonstrated to elicit a statistically significant increase in extracellular dopamine D1 and D2 concentrations in the striatum.[13]

Subjective effects

The general head space of alprazolam is described by many as one of intense sedation, relaxation, anxiety suppression and decreased inhibition.

Disclaimer: The effects listed below cite the Subjective Effect Index (SEI), an open research literature based on anecdotal user reports and the personal analyses of PsychonautWiki contributors. As a result, they should be viewed with a healthy degree of skepticism.

It is also worth noting that these effects will not necessarily occur in a predictable or reliable manner, although higher doses are more liable to induce the full spectrum of effects. Likewise, adverse effects become increasingly likely with higher doses and may include addiction, severe injury, or death ☠.


Physical effects
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Cognitive effects
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Visual effects
Eye.svg

After effects
Aftereffects (3).svg

Paradoxical effects
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Experience reports

Anecdotal reports which describe the effects of this compound within our experience index include:

Additional experience reports can be found here:

Toxicity and harm potential

Ambulance2.png

This toxicity and harm potential section is a stub.

As a result, it may contain incomplete or even dangerously wrong information! You can help by expanding upon or correcting it.
Note: Always conduct independent research and use harm reduction practices if using this substance.

Radar plot showing relative physical harm, social harm, and dependence of benzodiazepines in comparison to other drugs.[22]

Alprazolam has a low toxicity relative to dose.[3] However, it is potentially lethal when mixed with depressants like alcohol or opioids.

It is strongly recommended that one use harm reduction practices when using this substance.

The acute oral LD50 in rats is 331–2171 mg/kg. Other experiments in animals have indicated that cardiopulmonary collapse can occur following massive intravenous doses of alprazolam.

Dependence and abuse potential

Alprazolam is extremely physically and psychologically addictive.

Tolerance will develop to the sedative-hypnotic effects within a couple of days of continuous use.[23] After cessation, the tolerance returns to baseline in 7-14 days. However, in certain cases, this may take significantly longer in a manner which is proportional to the duration and intensity of one's long-term usage.

Alprazolam presents cross-tolerance with all benzodiazepines, meaning that after its consumption all benzodiazepines will have a reduced effect.

Overdose

Benzodiazepine overdose may occur with extremely high doses or, more commonly, when it is taken with other depressants. This risk is especially present with other GABAergic depressants, such as barbiturates and alcohol, since they work in a similar fashion but bind to distinct sites on the GABAA receptor, resulting in significant cross-potentiation.[citation needed]

Benzodiazepine overdose is a medical emergency that may lead to a coma, permanent brain injury or death if not treated promptly. Symptoms may include severe slurred speech, confusion, delusions, respiratory depression, and non-responsiveness. The user might seem like they are sleepwalking. The user is also more susceptible to consume more of the same or another substance due to their impaired judgement, which is typically not seen with other substances during overdose.

Benzodiazepine overdoses may be treated effectively in a hospital environment, with generally favorable outcomes. Care is primarily supportive in nature, although overdoses are sometimes treated with flumazenil, a GABAA antagonist[24] or additional procedures such as adrenaline injections if other substances are involved.[citation needed]

Discontinuation

Benzodiazepine discontinuation is notoriously difficult; it is potentially life-threatening for individuals using regularly to discontinue use without tapering their dose over a period of weeks. There is an increased risk of high blood pressure, seizures, and death.[25] Substances which lower the seizure threshold such as tramadol should be avoided during withdrawal.[citation needed] Abrupt discontinuation also causes rebound stimulation which presents as anxiety, insomnia and restlessness.[citation needed]

If one wishes to discontinue after a period of regular use, it is safest to reduce the dose each day by a very small amount for a couple of weeks until close to abstinence. If using a short half-life benzodiazepine such as alprazolam or etizolam, a longer acting variety such as diazepam or clonazepam can be substituted. Symptoms may still be present, but their severity will be reduced significantly.

For more information on tapering from benzodiazepines in a controlled manner, please see this guide. Small quantities of alcohol can also help to reduce the symptoms, but otherwise cannot be used as an effective tapering agent.

The duration and severity of withdrawal symptoms depend on a number of factors including the half-life of the substance used, tolerance and the duration of abuse. Major symptoms will usually start within just a few days after discontinuation and persist for around a week for shorter lasting benzodiazepines. Benzodiazepines with longer half-lives will exhibit withdrawal symptoms with a slow onset and extended duration.[citation needed]

Dangerous interactions

Warning: Many psychoactive substances that are reasonably safe to use on their own can suddenly become dangerous and even life-threatening when combined with certain other substances. The following list provides some known dangerous interactions (although it is not guaranteed to include all of them).

Always conduct independent research (e.g. Google, DuckDuckGo, PubMed) to ensure that a combination of two or more substances is safe to consume. Some of the listed interactions have been sourced from TripSit.

  • Depressants (1,4-Butanediol, 2M2B, alcohol, benzodiazepines, barbiturates, GHB/GBL, methaqualone, opioids) - This combination potentiates the muscle relaxation, amnesia, sedation, and respiratory depression caused by one another. At higher doses, it can lead to a sudden, unexpected loss of consciousness along with a dangerous amount of depressed respiration. There is also an increased risk of suffocating on one's vomit while unconscious. If nausea or vomiting occurs before a loss of consciousness, users should attempt to fall asleep in the recovery position or have a friend move them into it.
  • Dissociatives - This combination can unpredictably potentiate the amnesia, sedation, motor control loss and delusions that can be caused by each other. It may also result in a sudden loss of consciousness accompanied by a dangerous degree of respiratory depression. If nausea or vomiting occurs before consciousness is lost, users should attempt to fall asleep in the recovery position or have a friend move them into it.
  • Stimulants - Stimulants mask the sedative effect of depressants, which is the main factor most people use to gauge their level of intoxication. Once the stimulant effects wear off, the effects of the depressant will significantly increase, leading to intensified disinhibition, motor control loss, and dangerous black-out states. This combination can also potentially result in severe dehydration if one's fluid intake is not closely monitored. If choosing to combine these substances, one should strictly limit themselves to a pre-set schedule of dosing only a certain amount per hour until a maximum threshold has been reached.

Legal status

Internationally, alprazolam is included under the United Nations Convention on Psychotropic Substances as Schedule IV.[26]

  • Australia: Alprazolam was originally a Schedule 4 (prescription only) medication; however, as of January 2014, it will become a Schedule 8 medication, subjecting it to more rigorous prescribing requirements.[27]
  • Austria: Alprazolam is legal for medical use under the AMG (Arzneimittelgesetz Österreich) and illegal when sold or possessed without a prescription under the SMG (Suchtmittelgesetz Österreich).[citation needed]
  • Czechia: Alprazolam is a Schedule IV [28] (List 7) substance. Sold exclusively with a prescription "without a blue stripe" (§ 1, g), 1. of Nařízení vlády č. 463/2013 Sb.) [29]
  • Germany: Alprazolam is controlled under Anlage III BtMG (Narcotics Act, Schedule III) as of August 1, 1986.[30] It can only be prescribed on a narcotic prescription form, except preparations which contain up to 1 mg alprazolam in each dosage form.[31]
  • Ireland: Alprazolam is a Schedule 4 medicine.[32]
  • Italy: Alprazolam is a schedule IV drug (Tabella 4) of the "Testo unico sulla droga (D.P.R. 309/90)". When prescribed for medical use it falls under Pharmaceuticals section B and E (Tabella medicinali sezione B ed E).[33][34]
  • Russia: In Russia, since 2013, alprazolam is a Schedule III controlled substance.[35]
  • Sweden: Alprazolam is a prescription drug in List IV (Schedule 4) under the Narcotics Drugs Act (1968).[36]
  • Switzerland: Alprazolam is a controlled substance specifically named under Verzeichnis B. Medicinal use is permitted.[37]
  • Turkey: Alprazolam is a 'green prescription' only substance[38] and illegal when sold or possessed without a prescription.[citation needed]
  • The Netherlands: Alprazolam is a List 2 substance of the Opium Law[39] and is available for prescription.[citation needed]
  • United Kingdom: Alprazolam is classified as a controlled drug and listed under Schedule IV, Part I (CD Benz POM) of the Misuse of Drugs Regulations 2001, allowing possession with a valid prescription. The Misuse of Drugs Act 1971 makes it illegal to possess the drug without a prescription and, for such purposes, it is classified as a Class C drug.[40]
  • United States: Alprazolam is a prescription medication assigned to Schedule IV of the Controlled Substances Act by the DEA.[41]

See also

External links

Further reading

  • The Ashton Manual - Useful information on safe withdrawal from long-term benzodiazepine use and dependence

References

  1. Risks of Combining Depressants - TripSit 
  2. 2.0 2.1 Reissig, C. J., Harrison, J. A., Carter, L. P., Griffiths, R. R. (2015). "Inhaled vs. oral alprazolam: subjective, behavioral and cognitive effects, and modestly increased abuse potential". Psychopharmacology. doi:10.1007/s00213-014-3721-0. 
  3. 3.0 3.1 Mandrioli, R., Mercolini, L., Raggi, M. A. (October 2008). "Benzodiazepine metabolism: an analytical perspective". Current Drug Metabolism. 9 (8): 827–844. doi:10.2174/138920008786049258. ISSN 1389-2002. 
  4. Nuss, P. (17 January 2015). "Anxiety disorders and GABA neurotransmission: a disturbance of modulation". Neuropsychiatric Disease and Treatment. 11: 165–175. doi:10.2147/NDT.S58841. ISSN 1176-6328. 
  5. FDA approved labeling for Xanax revision 08/23/2011 | http://www.accessdata.fda.gov/drugsatfda_docs/label/2011/018276s045lbl.pdf
  6. Smith, R. B., Kroboth, P. D., Vanderlugt, J. T., Phillips, J. P., Juhl, R. P. (1984). "Pharmacokinetics and pharmacodynamics of alprazolam after oral and IV administration". Psychopharmacology. 84 (4): 452–456. doi:10.1007/BF00431449. ISSN 0033-3158. 
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  10. Kahan, M., Wilson, L., Mailis-Gagnon, A., Srivastava, A. (November 2011). "Canadian guideline for safe and effective use of opioids for chronic noncancer pain. Appendix B-6: Benzodiazepine Tapering". Canadian Family Physician. 57 (11): 1269–1276. ISSN 0008-350X. 
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  25. Lann, M. A., Molina, D. K. (June 2009). "A fatal case of benzodiazepine withdrawal". The American Journal of Forensic Medicine and Pathology. 30 (2): 177–179. doi:10.1097/PAF.0b013e3181875aa0. ISSN 1533-404X. 
  26. List of Psychotropic Substances under International Control | http://www.incb.org/documents/Psychotropics/green_lists/Green_list_ENG_2014_85222_GHB.pdf
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  28. https://eur-lex.europa.eu/resource.html?uri=cellar:6b5e9beb-1d9b-11ea-95ab-01aa75ed71a1.0001.02/DOC_1&format=PDF
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  32. eISB, Misuse Of Drugs (Amendment) Regulations 
  33. Tabella IV Sostanze stupefacenti http://www.salute.gov.it/imgs/C_17_pagineAree_3729_listaFile_itemName_3_file.pdf
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  35. Постановление Правительства РФ от 04.02.2013 N 78 “О внесении изменений в некоторые акты Правительства Российской Федерации” - КонсультантПлюс 
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  38. YEŞİL REÇETEYE TABİ İLAÇLAR | https://www.titck.gov.tr/storage/Archive/2019/contentFile/01.04.2019%20SKRS%20Ye%C5%9Fil%20Re%C3%A7eteli%20%C4%B0la%C3%A7lar%20Aktif%20SON%20-%20G%C3%9CNCEL_58b1ff4a-2e1c-4867-bad7-eec855d6162a.pdf
  39. Opiumwet, Lijst II (Dutch), 2023 
  40. Drugs licensing 
  41. DEA, Drug Scheduling | http://www.deadiversion.usdoj.gov/schedules/index.html